9/16" x 6" Magnetic Swivel Spark Plug Socket
Hover over the image to zoom in
Share this:

Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket

Part No. 3938D Warranty Details  
Fits 9/16" spark plugs used on the Ford F-150 with the Triton V8 engine.

Product Features:
  • Magnetic insert holds plugs for removal and installation
  • 360° swivel action
  • 6-point, 3/8" drive
Back To Top
Finish:Mirror
Impact Wrench Use:No
Material:Chrome Vanadium
Socket Drive Size:3/8 in
Socket Size:9/16 in

REVIEW SNAPSHOT®

by PowerReviews
Gear Wrench9/16" x 6" Magnetic Swivel Spark Plug Socket
 
4.2

(based on 20 reviews)

Ratings Distribution

  • 5 Stars

     

    (13)

  • 4 Stars

     

    (3)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (3)

89%

of respondents would recommend this to a friend.

Pros

  • Durable (12)
  • Versatile (10)
  • Good grip (8)
  • Lightweight (5)
  • Good power output (4)

Cons

No Cons

Best Uses

  • Regular maintenance (12)
  • Automotive repair shop (10)
  • Home (8)
  • Minor repairs (3)
    • Reviewer Profile:
    • Casual driver (3)
    • Was this a gift?:
    • No (3)
    • Reviewer Profile:
    • Auto enthusiast (6), Truck enthusiast (6), Casual driver (4)

Most Liked Positive Review

 

Works with 2005 F-250 with 5.4L

This or similar product is necessary to make removal of the plugs for Ford 5.4L easier. Ford made the process very complex and this tool helps.

Following Ford's guidelines I backed...Read complete review

This or similar product is necessary to make removal of the plugs for Ford 5.4L easier. Ford made the process very complex and this tool helps.

Following Ford's guidelines I backed the plug out 1/8th turn and added a small amount of penetrating fluid to loosen carbon and other buildup before removing the plug. Ford calls for Motorcraft carb cleaner, I used Sea Foam Creep. I waited two hours instead of Ford's lesser amount of time for the cleaner to do it's job. I then backed the plug out another 1/4 turn, and then re-tightened, backed out 1/4 turn and waited another 15 mins. Then removed the plug with none of the horror stories you will find about this process.

You will need multiple extensions and swivel to get to a convenient place to turn a ratchet.

VS

Most Liked Negative Review

 

Doesn't fit the Motorcraft SP-509 used in Trition V8

Despite the fact that this socket is specifically advertised for the spark plugs used in the Triton V8, it is too shallow to accommodate the Motorcraft SP-509 plug currently used in the Triton...Read complete review

Despite the fact that this socket is specifically advertised for the spark plugs used in the Triton V8, it is too shallow to accommodate the Motorcraft SP-509 plug currently used in the Triton V8. Kudos to Advance Auto for offering to refund my money despite the fact that it was outside the 90 days.

Reviewed by 20 customers

Displaying reviews 1-10

Back to top

Previous | Next »

 
1.0

Broke on the second plug

By 

from New Hartford, CT

Verified Reviewer

Pros

    Cons

    • Not durable

    Best Uses

      Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

      2006 F150. I needed to replace 2 and 4. It was great for getting at 4, and got it out (there is not much room there and the flexible joint helped a lot). Moved to 2 and it snapped at the joint before breaking the plug free. Since I was able to use a deep 9/16 socket to get at that one, I'm at least fortunate to have gotten 4 out first.

      • Was this a gift?:
      • No
       
      5.0

      Performed better than I could have ever hoped. Excellent to.

      By 

      from Ny

      Verified Buyer

      Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

      Worked perfectly, love how it holds the spark plug perfectly.

      • Was this a gift?:
      • No
       
      3.0

      could be a little longer

      By 

      from New Hampshire

      See all my reviews

      Verified Buyer
      3 or more reviews submitted

      Pros

      • Good Price

      Cons

      • It Is A Little Short

      Best Uses

        Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

        socket is a little short for Motorcraft SP-509 Plugs

        • Was this a gift?:
        • No

        (0 of 1 customers found this review helpful)

         
        1.0

        Does not work on all 9/16 spark plug

        By 

        from Northern, VA

        About Me Auto Enthusiast, Truck Enthusiast

        Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

        I bought this to change the spark plugs in a Nissan 2.5.

        The plug would not seat far enough to engage the hex part of the plug because the opening for the terminal lug is to small.

        (0 of 1 customers found this review helpful)

         
        1.0

        Doesn't fit the Motorcraft SP-509 used in Trition V8

        By 

        from PA

        About Me Casual Driver

        Pros

        • Magnetic
        • Swivels

        Cons

        • Not Deep Enough

        Best Uses

          Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

          Despite the fact that this socket is specifically advertised for the spark plugs used in the Triton V8, it is too shallow to accommodate the Motorcraft SP-509 plug currently used in the Triton V8. Kudos to Advance Auto for offering to refund my money despite the fact that it was outside the 90 days.

           
          5.0

          Does not for Infiniti G37 sport models

          By 

          from Valrico, FL

          About Me Casual Driver

          Pros

          • Lightweight
          • Powerful

          Cons

            Best Uses

            • Regular Maintenance

            Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

            Great look and feel. Does not fit inside the engine block area, need a thin wall 14mm socket for Infiniti's.

            (5 of 9 customers found this review helpful)

             
            5.0

            Made my life easy !

            By 

            from Calabash, NC

            About Me Auto Enthusiast, Truck Enthusiast

            See all my reviews

            Verified Buyer
            Helpful Reviewer

            Pros

            • Durable
            • Powerful

            Cons

              Best Uses

              • Automotive Repair Shop
              • Home
              • Regular Maintenance

              Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

              I purchased this product to help remove the spark plugs on my 2004 Ford F-150 pick up truck. The engine in this truck is a 5.4L with 24 valves. The plugs in this vehicle are notorious for breaking into two pieces, and require a special tool to remove. They sit very deep in a well on top of the heads, and are difficult to access especially the ones at the rear of the engine near the firewall. This swivel headed socket really helped to get the angle needed to remove the plugs, and the magnetic feature was priceless removing the 2 broken plugs that I encountered. I wouldn't recommend tackling this project without this valuable tool.

              (3 of 7 customers found this review helpful)

               
              5.0

              Great for Ford OEM spark plugs

              By 

              from Kingston, WA

              About Me Casual Driver

              Verified Buyer
              Helpful Reviewer

              Pros

              • Durable
              • Versatile

              Cons

                Best Uses

                • Automotive Repair Shop
                • Regular Maintenance

                Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

                Engaged in removing those infamous Ford Triton engine OEM spark plugs. Did not want to get conventional spark plug socket stuck or disconnected from extension, so tried this magnetic, one-piece 9/16" socket. Works exceptionally well, to remove the plugs in those deep recessed access areas. The built-in, self-aligning joint allowed for much easier removal of all 8 spark plugs, even those "impossible" ones in the far rear on each side. I do not know why Ford uses a 9/16" plug, when most plugs use a 5/8" size, but this socket is just the thing for those odd balls!

                (4 of 7 customers found this review helpful)

                 
                5.0

                2007 ford f150 5.4

                By 

                from westminster, md

                About Me Auto Enthusiast, Truck Enthusiast

                Pros

                • Durable
                • Powerful
                • Versatile

                Cons

                  Best Uses

                  • Regular Maintenance

                  Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

                  Used this to remove the spark plugs from my 2007 5.4 3 valve. Worked excellent and I only broke 1 plug, and I used the lisle tool (lis65600) to remove it. Overall it took me 2.5 hours total to change the 8 plugs. Very happy!

                  (6 of 10 customers found this review helpful)

                   
                  4.0

                  Magnetic Swivel Spark Plug Socket

                  By 

                  from Warner Robins

                  About Me Casual Driver

                  See all my reviews

                  Verified Buyer
                  Helpful Reviewer

                  Pros

                  • Durable
                  • Good Grip
                  • Versatile

                  Cons

                    Best Uses

                    • Home
                    • Minor Repairs
                    • Regular Maintenance

                    Comments about Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket:

                    Great product, swivel is a must. Unfortunately it won't fit for 2009 Toyota Corolla. I had to buy a thin wall socket to remove plugs.

                    Displaying reviews 1-10

                    Back to top

                    Previous | Next »

                    Do you have questions about this product?

                     

                    Ask a question, get answers from real customers and in-house experts. For further assistance, please review your support options on our Contact Us page.

                    2 Questions | 2 Answers
                    Displaying questions 1-2
                    • Q:

                      Can this be use for a 2014 nissan altima s.
                      Asked on 3/7/2017 by Curious

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Hi Curious, glad to assist you! This Gear Wrench 9/16" x 6" Magnetic Swivel Spark Plug Socket (Part No. 3938D) fits 9/16" spark plugs used on the Ford F-150 with the Triton V8 engine. The exact spark plug socket for your vehicle is currently unavailable online. I would suggest that you visit the nearest Advance Auto Parts store to check the availability of this part.

                        Answered on 3/9/2017 by Steve from AAP
                    • Q:

                      can this one use on 2004 Acura MDX?
                      Asked on 11/22/2012 by THANH

                      1 answer

                      • CUSTOMER CARE

                        A:

                        Sorry, this KD Tools 9/16" x 6" Magnetic Swivel Spark Plug Socket - part# 3938 fits for 9/16" spark plugs and can be used on the Ford F-150 with the Triton V8 engine. For any further assistance, please visit your nearest Advance Auto store or call us directly at 1-877-ADVANCE (238-2623) and one of our representatives there would be more than happy to assist you.

                        Answered on 11/22/2012 by Vincent from AAP
                    Displaying questions 1-2

                    Do you have a question about this product? 

                    Check out the specials in our monthly flyer.
                     
                     
                    Disclaimer We strive to keep all information accurate and up-to-date; however, product availability, pricing, promotions and store hours are subject to change without notice. Please contact Customer Care if you have any questions or corrections.